Difference between revisions of "T-72B (1989)"

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== Description ==
 
== Description ==
 
<!-- ''In the description, the first part should be about the history of the creation and combat usage of the vehicle, as well as its key features. In the second part, tell the reader about the ground vehicle in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.'' -->
 
<!-- ''In the description, the first part should be about the history of the creation and combat usage of the vehicle, as well as its key features. In the second part, tell the reader about the ground vehicle in the game. Insert a screenshot of the vehicle, so that if the novice player does not remember the vehicle by name, he will immediately understand what kind of vehicle the article is talking about.'' -->
The '''{{Specs|name}}''' is a rank {{Specs|rank}} Soviet medium tank {{Battle-rating}}. It was introduced in [[Update "Raining Fire"]].
+
The '''T-72B Model 1989''' is an armoured modification of the [[T-72B]], which is the third variant of the [[T-72 (Family)|T-72 main battle tank family]]. It is distinguished primarily by its use of advanced Kontakt-5 explosive reactive armour (ERA) and additional composite armour on the sides of the turret. The Kontakt-5 is a second-generation ERA that was designed and built in the Soviet Union. It is also the first type of ERA in the world to significantly reduce the penetration of armour-piercing fin-stabilised discarding sabot (APFSDS) ammunition, which conventional ERA cannot do.
 +
 
 +
Introduced in [[Update "Raining Fire"]], the T-72B Model 1989 playstyle is nearly identical to its predecessors, but it offers significantly more protection in general thanks to the introduction of the Kontakt-5 ERA. Other components, such as the main armament and overall structure, are identical to those of the T-72B variant. This gives the player a slightly more aggressive gameplay experience, but confrontation in narrow streets should still be avoided due to the slow reverse speed, which makes fast retreat difficult.
  
 
== General info ==
 
== General info ==
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{{Specs-Tank-Weapon|1}}
 
{{Specs-Tank-Weapon|1}}
 
<!-- ''Give the reader information about the characteristics of the main gun. Assess its effectiveness in a battle based on the reloading speed, ballistics and the power of shells. Do not forget about the flexibility of the fire, that is how quickly the cannon can be aimed at the target, open fire on it and aim at another enemy. Add a link to the main article on the gun: <code><nowiki>{{main|Name of the weapon}}</nowiki></code>. Describe in general terms the ammunition available for the main gun. Give advice on how to use them and how to fill the ammunition storage.'' -->
 
<!-- ''Give the reader information about the characteristics of the main gun. Assess its effectiveness in a battle based on the reloading speed, ballistics and the power of shells. Do not forget about the flexibility of the fire, that is how quickly the cannon can be aimed at the target, open fire on it and aim at another enemy. Add a link to the main article on the gun: <code><nowiki>{{main|Name of the weapon}}</nowiki></code>. Describe in general terms the ammunition available for the main gun. Give advice on how to use them and how to fill the ammunition storage.'' -->
{{main|2A46M-1 (125 mm)}}
+
{{main|2A46M (125 mm)}}
  
 
The T-72B has the powerful 2A46M 125 mm smoothbore cannon. It has a powerful selection of rounds, each with different uses and similarities between same types.
 
The T-72B has the powerful 2A46M 125 mm smoothbore cannon. It has a powerful selection of rounds, each with different uses and similarities between same types.
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{| class="wikitable" style="text-align:center" width="100%"
 
{| class="wikitable" style="text-align:center" width="100%"
 
|-
 
|-
! colspan="5" | [[2A46M-1 (125 mm)|125 mm 2A46M-1]] || colspan="5" | Turret rotation speed (°/s) || colspan="4" | Reloading rate (seconds)
+
! colspan="5" | [[2A46M (125 mm)|125 mm 2A46M]] || colspan="5" | Turret rotation speed (°/s) || Reloading rate (seconds)
 
|-
 
|-
 
! Mode !! Capacity !! Vertical !! Horizontal !! Stabilizer
 
! Mode !! Capacity !! Vertical !! Horizontal !! Stabilizer
 
! Stock !! Upgraded !! Full !! Expert !! Aced
 
! Stock !! Upgraded !! Full !! Expert !! Aced
! Stock !! Full !! Expert !! Aced
+
! Autoloader
 
|-
 
|-
 
! ''Arcade''
 
! ''Arcade''
| rowspan="2" | 45 || rowspan="2" | -/+13° || rowspan="2" | ±180° || rowspan="2" | Two-plane || 22.8 || 31.6 || 38.4 || 42.5 || 45.2 || rowspan="2" | 7.10 || rowspan="2" | 7.10 || rowspan="2" | 7.10 || rowspan="2" | 7.10
+
| rowspan="2" | 45 || rowspan="2" | -/+13° || rowspan="2" | ±180° || rowspan="2" | Two-plane || 22.8 || 31.6 || 38.4 || 42.5 || 45.2 || rowspan="2" | 7.10
 
|-
 
|-
 
! ''Realistic''
 
! ''Realistic''
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* '''3BM42''': this is a tier 4 APFSDS which has different ballistic performance than 3BM22. While it has more penetration power and greater mass, it has reduced speed (1,760 m/s vs 1,700 m/s).
 
* '''3BM42''': this is a tier 4 APFSDS which has different ballistic performance than 3BM22. While it has more penetration power and greater mass, it has reduced speed (1,760 m/s vs 1,700 m/s).
  
{| class="wikitable sortable" style="text-align:center" width="100%"
+
{{:2A46M (125 mm)/Ammunition|3BK18M, 3OF26, 3BM22, 9M119, 3BM42}}
! colspan="8" | Penetration statistics
 
|-
 
! rowspan="2" data-sort-type="text" | Ammunition
 
! rowspan="2" | Type of<br>warhead
 
! colspan="6" | '''Penetration @ 0° Angle of Attack (mm)'''
 
|-
 
! 10 m !! 100 m !! 500 m !! 1,000 m !! 1,500 m !! 2,000 m
 
|-
 
| 3BK18M || HEATFS || 550 || 550 || 550 || 550 || 550 || 550
 
|-
 
| 3OF26 || HE || 42 || 42 || 42 || 42 || 42 || 42
 
|-
 
| 3BM22 || APFSDS || 425 || 420 || 415 || 405 || 393 || 380
 
|-
 
| 9M119 || ATGM || 700 || 700 || 700 || 700 || 700 || 700
 
|-
 
| 3BM42 || APFSDS || 479 || 477 || 470 || 462 || 453 || 445
 
|-
 
|}
 
{| class="wikitable sortable" style="text-align:center" width="100%"
 
! colspan="10" | Shell details
 
|-
 
! rowspan="2" data-sort-type="text" | Ammunition
 
! rowspan="2" | Type of<br>warhead
 
! rowspan="2" | Velocity<br>(m/s)
 
! rowspan="2" | Projectile<br>Mass (kg)
 
! rowspan="2" | Fuse delay<br>(m)
 
! rowspan="2" | Fuse sensitivity<br>(mm)
 
! rowspan="2" | Explosive Mass<br>(TNT equivalent) (g)
 
! colspan="3" | Ricochet
 
|-
 
! 0% !! 50% !! 100%
 
|-
 
| 3BK18M || HEATFS || 905 || 19 || 0.05 || 0.1 || 2,790 || 65° || 72° || 77°
 
|-
 
| 3OF26 || HE || 850 || 23 || 0 || 0.1 || 5,240 || 79° || 80° || 81°
 
|-
 
| 3BM22 || APFSDS || 1,760 || 4.83 || N/A || N/A || N/A || 76° || 77° || 80°
 
|-
 
| 9M119 || ATGM || 400 || 23.3 || 0.05 || 0.1 || 5,540 || 80° || 82° || 90°
 
|-
 
| 3BM42 || APFSDS || 1,700 || 4.85 || N/A || N/A || N/A || 78° || 80° || 81°
 
|-
 
|}
 
  
 
==== [[Ammo racks]] ====
 
==== [[Ammo racks]] ====
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! Mount !! Capacity (Belt) !! Fire rate !! Vertical !! Horizontal
 
! Mount !! Capacity (Belt) !! Fire rate !! Vertical !! Horizontal
 
|-
 
|-
| Pintle || 300 (150) || 700 || -4°/+75° || ±180°
+
| Pintle || 300 (60) || 700 || -4°/+75° || ±180°
 
|-
 
|-
 
|}
 
|}
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! Mount !! Capacity (Belt) !! Fire rate !! Vertical !! Horizontal
 
! Mount !! Capacity (Belt) !! Fire rate !! Vertical !! Horizontal
 
|-
 
|-
| Coaxial || 2,000 (250) || 700 || N/A || N/A
+
| Coaxial || 2,000 (250) || 700 || - || -
 
|-
 
|-
 
|}
 
|}
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<!-- ''Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but instead give the reader food for thought. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).'' -->
 
<!-- ''Describe the tactics of playing in the vehicle, the features of using vehicles in the team and advice on tactics. Refrain from creating a "guide" - do not impose a single point of view but instead give the reader food for thought. Describe the most dangerous enemies and give recommendations on fighting them. If necessary, note the specifics of the game in different modes (AB, RB, SB).'' -->
  
The T-72B (1989) playstyle is near identical to the T-72B but starts to give T-90A vibes due to ERA. This tank has the exact same modules, sights and combat systems as the previous T-72B. However, it has access to Kontakt-5 (K5) ERA, increasing not only the chemical protection of the tank against missiles and shaped charges but also solid shots like darts.  
+
The T-72B (1989) playstyle is near identical to the T-72B but starts to give T-90A vibes due to ERA. This tank has the exact same modules, sights and combat systems as the previous T-72B. However, it has access to Kontakt-5 (K5) ERA, increasing not only the chemical protection of the tank against missiles and shaped charges but also solid shots like darts.
  
 
'''Enemies worth noting:'''
 
'''Enemies worth noting:'''
Line 252: Line 210:
 
* [[wt:en/news/6830-development-new-t-72-modifications-here-come-the-top-of-the-line-russians-en|[Devblog] New T-72 modifications: here come the top-of-the-line Russians!]]
 
* [[wt:en/news/6830-development-new-t-72-modifications-here-come-the-top-of-the-line-russians-en|[Devblog] New T-72 modifications: here come the top-of-the-line Russians!]]
  
 +
{{TankManufacturer Uralvagonzavod}}
 
{{USSR medium tanks}}
 
{{USSR medium tanks}}
 
[[Category:ATGM vehicles]]
 
[[Category:ATGM vehicles]]

Latest revision as of 20:28, 14 December 2023

Rank VI USA | Premium | Golden Eagles
A-10A Thunderbolt (Early)
This page is about the Soviet medium tank T-72B (1989). For other versions, see T-72 (Family).
T-72B (1989)
ussr_t_72b_1989.png
GarageImage T-72B (1989).jpg
T-72B (1989)
AB RB SB
10.3 10.3 10.3
Class:
Research:150 000 Specs-Card-Exp.png
Purchase:830 000 Specs-Card-Lion.png
Show in game

Description

The T-72B Model 1989 is an armoured modification of the T-72B, which is the third variant of the T-72 main battle tank family. It is distinguished primarily by its use of advanced Kontakt-5 explosive reactive armour (ERA) and additional composite armour on the sides of the turret. The Kontakt-5 is a second-generation ERA that was designed and built in the Soviet Union. It is also the first type of ERA in the world to significantly reduce the penetration of armour-piercing fin-stabilised discarding sabot (APFSDS) ammunition, which conventional ERA cannot do.

Introduced in Update "Raining Fire", the T-72B Model 1989 playstyle is nearly identical to its predecessors, but it offers significantly more protection in general thanks to the introduction of the Kontakt-5 ERA. Other components, such as the main armament and overall structure, are identical to those of the T-72B variant. This gives the player a slightly more aggressive gameplay experience, but confrontation in narrow streets should still be avoided due to the slow reverse speed, which makes fast retreat difficult.

General info

Survivability and armour

ERA
Effective action against the cumulative ammunition
Composite armour
Balanced protection against all types of ammunition
Smoke grenades
Creation of a smoke screen in front of the vehicle
ESS
Creation of a smoke screen in the direction of movement of the vehicle
Self-entrenching equipment
Creation of ramparts and trenches in soft ground
Armourfront / side / back
Hull105 / 80 / 50
Turret180 / 160 / 65
Crew3 people
Visibility75 %

While being the same tank as the T-72B, the T-72B (1989) has CONTACT-5 ERA instead of CONTACT-1, making it able to withstand greater kinetic energy damage (APFSDS, APDS, etc) while keeping its capability against chemical energy (HEAT-FS, ATGM, etc). It should be noted that, depending on the calibre and round, the ERA plates may even survive a hit or two. However, this is not something that should be expected most of the time.

Armour Front (Slope angle) Sides Rear Roof
Hull 60 mm (60°) 80 mm Top
20 mm Bottom
40 mm 20 - 30 mm
Turret Variable thickness armour Turret front
220-600 mm Gun mantlet
240 - 118 mm 60 - 115 mm 45 mm
Cupola 100 mm (variable angles) 100 mm 100 mm 40 mm

Notes:

  • ERA plates are 13 mm thick

Mobility

Speedforward / back
AB67 / 5 km/h
RB and SB60 / 5 km/h
Number of gears7 forward
1 back
Weight44.5 t
Engine power
AB1 603 hp
RB and SB840 hp
Power-to-weight ratio
AB36.0 hp/t
RB and SB18.9 hp/t
Game Mode Max Speed (km/h) Weight (tons) Engine power (horsepower) Power-to-weight ratio (hp/ton)
Forward Reverse Stock Upgraded Stock Upgraded
Arcade 67 5 44.5 1,302 1,603 29.26 36.02
Realistic 60 5 743 840 16.7 18.88

The T-72B (1989) is a slow and sluggish tank which has poor acceleration and handling. It has really poor reverse speed as well as hull traverse. However, it has a powerful engine which makes it capable of pulling and pushing enemy tanks as well as moving through rough terrain with ease. It does not have enough horsepower to climb over steep elevations. Speed-wise, it has a decent top speed (~60-70 km/h) which under specific situations it is able to be reached.

Modifications and economy

Repair costBasic → Reference
AB4 473 → 6 749 Sl icon.png
RB4 333 → 6 538 Sl icon.png
SB5 043 → 7 609 Sl icon.png
Total cost of modifications248 900 Rp icon.png
410 000 Sl icon.png
Talisman cost2 900 Ge icon.png
Crew training240 000 Sl icon.png
Experts830 000 Sl icon.png
Aces2 100 Ge icon.png
Research Aces1 140 000 Rp icon.png
Reward for battleAB / RB / SB
160 / 200 / 250 % Sl icon.png
238 / 238 / 238 % Rp icon.png
Modifications
Mobility Protection Firepower
Mods new tank traks.png
Tracks
Research:
11 000 Rp icon.png
Cost:
17 000 Sl icon.png
310 Ge icon.png
Mods new tank suspension.png
Suspension
Research:
12 000 Rp icon.png
Cost:
19 000 Sl icon.png
340 Ge icon.png
Mods new tank break.png
Brake System
Research:
12 000 Rp icon.png
Cost:
19 000 Sl icon.png
340 Ge icon.png
Mods new tank filter.png
Filters
Research:
13 000 Rp icon.png
Cost:
20 000 Sl icon.png
370 Ge icon.png
Mods new tank transmission.png
Transmission
Research:
17 000 Rp icon.png
Cost:
26 000 Sl icon.png
490 Ge icon.png
Mods new tank engine.png
Engine
Research:
17 000 Rp icon.png
Cost:
26 000 Sl icon.png
490 Ge icon.png
Mods tank tool kit.png
Improved Parts
Research:
3 300 Rp icon.png
Cost:
17 000 Sl icon.png
310 Ge icon.png
Mods dozer blade.png
Dozer Blade
Research:
11 000 Rp icon.png
Cost:
17 000 Sl icon.png
310 Ge icon.png
Mods extinguisher.png
Improved FPE
Research:
3 600 Rp icon.png
Cost:
19 000 Sl icon.png
340 Ge icon.png
Mods tank reinforcement ussr.png
Crew Replenishment
Research:
13 000 Rp icon.png
Cost:
20 000 Sl icon.png
370 Ge icon.png
Mods smoke screen.png
Smoke grenade
Research:
13 000 Rp icon.png
Cost:
20 000 Sl icon.png
370 Ge icon.png
Mods engine smoke screen system.png
ESS
Research:
17 000 Rp icon.png
Cost:
26 000 Sl icon.png
490 Ge icon.png
Mods new tank horizontal aiming.png
Horizontal Drive
Research:
11 000 Rp icon.png
Cost:
17 000 Sl icon.png
310 Ge icon.png
Mods tank ammo.png
125mm_ussr_APDS_FS_ammo_pack
Research:
11 000 Rp icon.png
Cost:
17 000 Sl icon.png
310 Ge icon.png
Mods tank cannon.png
Adjustment of Fire
Research:
12 000 Rp icon.png
Cost:
19 000 Sl icon.png
340 Ge icon.png
Mods tank laser rangefinder.png
Laser rangefinder
Research:
12 000 Rp icon.png
Cost:
19 000 Sl icon.png
340 Ge icon.png
Mods new tank vertical aiming.png
Elevation Mechanism
Research:
13 000 Rp icon.png
Cost:
20 000 Sl icon.png
370 Ge icon.png
Mods tank ammo.png
125mm_ussr_ATGM_ammo_pack
Research:
13 000 Rp icon.png
Cost:
20 000 Sl icon.png
370 Ge icon.png
Mods art support.png
Artillery Support
Research:
17 000 Rp icon.png
Cost:
26 000 Sl icon.png
490 Ge icon.png
Mods tank ammo.png
125mm_ussr_3BM42_APDS_FS_ammo_pack
Research:
17 000 Rp icon.png
Cost:
26 000 Sl icon.png
490 Ge icon.png

Armaments

Laser rangefinder
Reduces the error and increases the maximum measurable distance of the rangefinder

Main armament

Two-plane stabilizer
Reduces the swing of the gun in two planes while moving
Autoloader
Automatically feeds projectiles into the breech. The speed does not depend on the skills of the loader
Ammunition45 rounds
First-order22 rounds
Reload7.1 s
Vertical guidance-5° / 13°
Main article: 2A46M (125 mm)

The T-72B has the powerful 2A46M 125 mm smoothbore cannon. It has a powerful selection of rounds, each with different uses and similarities between same types.

125 mm 2A46M Turret rotation speed (°/s) Reloading rate (seconds)
Mode Capacity Vertical Horizontal Stabilizer Stock Upgraded Full Expert Aced Autoloader
Arcade 45 -5°/+13° ±180° Two-plane 22.8 31.6 38.4 42.5 45.2 7.10
Realistic 14.3 16.8 20.4 22.6 24.0

Ammunition

  • 3BK18M: this is the starting HEATFS round which can be seen as poor when in frontal engagements against modern MBTs. However, the shaped charge as well as not losing penetration over distance makes it a decent round for sniping. However, its muzzle velocity is not fast and will be hard to aim at long distances.
  • 3OF26: HE shell with a massive amount of explosive filler. This shell will destroy lightly armoured vehicles such as SPAA with overpressure.
  • 3BM22: this is a tier 1 tungsten core APFSDS which has the second highest muzzle velocity seen in Russian darts. However, the weight as well as penetration make it unreliable when facing top tier MBTs frontally.
  • 9M119: this is a tier 3 SACLOS ATGM which is seen already in T-72B. It is also seen in later T-72 models. It has decent penetration and flight speed, making it reliable for taking out helicopters and targeting enemies when use of an APFSDS shell is more difficult.
  • 3BM42: this is a tier 4 APFSDS which has different ballistic performance than 3BM22. While it has more penetration power and greater mass, it has reduced speed (1,760 m/s vs 1,700 m/s).

Penetration statistics
Ammunition Type of
warhead
Penetration @ 0° Angle of Attack (mm)
10 m 100 m 500 m 1,000 m 1,500 m 2,000 m
3BK18M HEATFS 550 550 550 550 550 550
3OF26 HE 42 42 42 42 42 42
3BM22 APFSDS 425 420 415 405 393 380
9M119 ATGM 700 700 700 700 700 700
3BM42 APFSDS 457 454 445 431 419 406
Shell details
Ammunition Type of
warhead
Velocity
(m/s)
Projectile
mass (kg)
Fuse delay
(m)
Fuse sensitivity
(mm)
Explosive mass
(TNT equivalent) (kg)
Ricochet
0% 50% 100%
3BK18M HEATFS 905 19 0.05 0.1 2.79 65° 72° 77°
3OF26 HE 850 23 0.3 0.1 5.24 79° 80° 81°
3BM22 APFSDS 1,760 4.83 - - - 76° 77° 80°
3BM42 APFSDS 1,700 4.85 - - - 78° 80° 81°
Missile details
Ammunition Type of
warhead
Velocity
(m/s)
Range
(m)
Projectile
mass (kg)
Fuse delay
(m)
Fuse sensitivity
(mm)
Explosive mass
(TNT equivalent) (kg)
Ricochet
0% 50% 100%
9M119 ATGM 445 4,000 16.5 0.05 0.1 5.72 80° 82° 90°

Ammo racks

Ammo racks of the T-72B (1989)
Full
ammo
1st
rack empty
2nd
rack empty
3rd
rack empty
4th
rack empty
Visual
discrepancy
45 41 (+4) 34 (+11) 22 (+23) (+45) No

Machine guns

12.7 mm NSVT machine gun
Ammunition300 rounds
Belt capacity60 rounds
Reload5.0 s
Fire rate700 shots/min
Vertical guidance-4° / 75°
Ammunition2 000 rounds
Belt capacity250 rounds
Reload8.0 s
Fire rate700 shots/min
12.7 mm NSVT
Mount Capacity (Belt) Fire rate Vertical Horizontal
Pintle 300 (60) 700 -4°/+75° ±180°
7.62 mm PKT
Mount Capacity (Belt) Fire rate Vertical Horizontal
Coaxial 2,000 (250) 700 - -

Usage in battles

The T-72B (1989) playstyle is near identical to the T-72B but starts to give T-90A vibes due to ERA. This tank has the exact same modules, sights and combat systems as the previous T-72B. However, it has access to Kontakt-5 (K5) ERA, increasing not only the chemical protection of the tank against missiles and shaped charges but also solid shots like darts.

Enemies worth noting:

  • XM-1 (Chrysler)/(GM): Avoid attempting combat with the 3BK18M HEATFS shells, despite their having thin composite armour
  • AMX-30B2/AMX-30B2 BRENUS: DM23/33 have enough armour penetration to penetrate T-72 driver lower frontal plates, though all shells are effective against them in return.
  • Leopard 2K: Turret mantlet is resistant to 3BK18M.
  • AMX-40: Turret mantlet and lower frontal plate are highly resistant to 3BK18M.
  • Strv 103: Depending on the hull angling, HEAT-FS rounds such as the 3BK18M might ricochet. APFSDS is recommended to be used when facing it frontally.

Pros and cons

Pros:

  • Powerful 125 mm 2A46M-1 gun with various shells, including APFSDS, HEAT-FS, HE, ATGM
  • CONTACT-5 ERA blocks significantly increases CE protection, and slightly for KE protection
  • Low profile, is a small target compared to Western main battle tanks
  • Laser rangefinder and high velocity APFSDS make sniping long distances easier
  • Has both smoke grenade launchers and ESS
  • With correct angling, upper frontal armour can deflect most rounds from counterpart tanks of other countries
  • Autoloader continues working even if fighting a fire or replacing a crew member, and is low on the hull, making it more difficult to hit and detonate

Cons:

  • Painful reverse speed of only -5 km/h, can very much get the player destroyed if not careful
  • -6 degrees gun depression limits its ability to adapt different battlefield environments
  • 7.1 seconds of reload is slower than the 5-second reload of some Western MBTs
  • No ammo rack protection, anything that hits it usually leads to ammo detonation, destroying the vehicle instantly
  • 3 closely packed crew members are easily knocked out
  • Has 3 major weakspots: gun mantlet, driver's armour cutout, and lower front plate
  • No thermal optics, only has night vision device

History

Main article: History of the T-72B
As seen in picture, the K1 ERA is a two layer "V" shaped one-use ERA brick. It is vulgarly called "LEGO brick" for its similarities with the famous modular building game.

Thanks to the increased combat seen in Middle East and threatening NATO powers, Uralzavodvagon decided to upgrade their previous T-72B tanks with CONTACT-1 (K1) ERA to CONTACT-5 (K5) ERA. It was also fitted with a new Fire Control System.

As seen in picture, the longer a CE projectile, the more shaped charge angle it can have, increasing the jet lenght and penetration power.
Kontakt-1

The K1 ERA is a first generation ERA meant to stop early and mid Cold War super plastic slugs and small jets including a wide variety or propelled grenades, anti-tank rockets, HEAT ammunition and ATGM. The K1 are rather small boxes (314 x 148 mm base area) with 3 mm thick steel walls. The reactive sandwich with the designation 4S20 consists of a 2 mm thick steel plate, a 7 mm thick explosive layer and another 2 mm thick steel plate. Thanks to its double plating, the K1 was effective when repelling HEAT jets from all angles thanks to the "V" shape unlike other ERA seen at the time like the Blazer ERA. The "V" shape plus the tank armour angling increased the effective protection of the ERA brick and the effective turret armour, this was the main reason why T-72AV, T-80B and T-64BV had clam-shaped ERA placement on the turret. It provided sufficient protection for all seen threats in combat at the time from NATO forces and related enemy forces. Germany and the United States drove tests on retrieved T-72B fitted with K1 ERA and estimated the protection range K1 has to offer against anti-tank munitions. It rounded between 300-480 mm of RHA against slug and small jets only with the following protection percentages:

  • PG-7 and PG-9 launchers: ­less than 90%
  • PG-7VL: less than 50%
  • TOW-1: less than 60%

One of the first disadvantages of the K1 was its sensitivity against small-calibre firearms and heavy machine gun fire which prematurely detonated the ERA before it got hit by the anti-tank munition. For this reason, a non sensitive explosive was chosen in order to reduce this risk.

ERA vs APFSDS.jpg

As the years passed, various threats started to show up against the K1 ERA, these were stronger and more canalized jets, tandem warheads and improved darts. For this reason, a more powerful explosive was required as well as an upgrade to the K1. Same as with K1, the plates (rather than bricks) are placed in a "V" shape on the turret (iconic T-90 turret) in order to increase the effectiveness.

X-Ray picture of M829A1 against K5. Test driven by the US and Germany, 1996.
Kontakt-5

The K5 was a followed up design of ERA capable of surpassing the K1 capabilities against CE ammunition with added protection against KE ammunition, a capability that was never seen before, this made the K5 the world's first anti-KE ERA. The K5 was designated as an "integrated ERA" due to the way it was mounted on tanks. The K5 consists of the 4S22 explosive sandwiched between thick heavy steel plates. Thanks to this, the ERA is somewhat safe against tandem charges as the tandem charge precursor has to be heavier and stronger in order to detonate the ERA before the main charge detonates, this made it immune to heavy machine gun fire. Depending on the mount, a single layer or two is added. It is claimed that the K5 has a protection of 300 mm of RHA against KE with a CE protection ranging from 400-550 mm. While these claims are not fully confirmed, it is known the K5 has at least a 20% penetration reduction against APFSDS, capable of dealing with DU darts such as the M829A1, increasing the CE effectiveness by 1.9-2.0 and KE effectiveness to 1.2. The United States and Germany drove tests on the K5 and captured an X-Ray image (see above). It can be clearly seen how the dart is completely fractured. This is due to the shockwave generated by the explosives which fly from the ballistic cap through the dart and end up on the tail. Non-segmented darts are more rigid and less flexible, meaning shockwaves will shatter them more than if it moved with the shockwave (similar effect hydraulic pistons and flexible concrete has on earthquake proof buildings). As seen in the second picture, segmented ERA is not safe from K5 either. It should be noted that, in segmented rods, the penetrator is segmented into various segments which make the overall penetration. Non-segmented ones are full piece penetrator. While the K5 can fracture rods, it should be noted that the K5 cannot fully stop the dart. The remains are stopped by the actual tank armour but with reduced effort as dart penetration has already been reduced. Different from light ERA in which the container is fully destroyed by the explosion, K5 maintains the mounts as the explosion is made on the outer plates and not inside the container. This is the reason why T-80U and T-90 keep their "V" shaped turret even after being hit. The mounts provide appliqué armour but not sufficient protection to stop jets or darts.

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Other vehicles of similar configuration and role

External links


Ural Railroad Car Plant (УралВагонЗавод)
Main Battle Tanks 
T-55  T-55A · T-55AM-1
T-62  T-62 · T-62M-1
T-72  T-72A · T-72B · T-72B (1989) · T-72B3
T-90  Т-90А
Heavy Tanks  IS-6
Tank Destroyers  SU-122-54 · IT-1
Export/Captured 
MBTs  Type 59 · Т-62 №545 · T-72AV (TURMS-T) · ◊T-72M1
See Also  Morozov Design Bureau

USSR medium tanks
T-28  T-28 (1938) · T-28 · T-28E
T-34-76  T-34 (Prototype) · T-34 (1940) · T-34 (1941) · T-34 (1st Gv.T.Br.) · T-34 (1942) · T-34E STZ · T-34E
T-34-57  T-34-57 · T-34-57 (1943)
T-34-85  T-34-85 (D-5T) · T-34-85 · T-34-85E
T-34-100  T-34-100
T-44  T-44 · T-44-100 · T-44-122
T-54  T-54 (1947) · T-54 (1949) · T-54 (1951)
T-55  TO-55 · T-55A · T-55AM-1 · T-55AMD-1
T-62  T-62 · T-62M-1
T-64  Object 435 · T-64A (1971) · T-64B
T-72  T-72A · T-72AV (TURMS-T) · T-72B · T-72B (1989) · T-72B3 · T-72M2 Moderna
T-80  T-80B · T-80U · T-80UD · T-80UK · T-80UM2 · Т-80U-Е1 · T-80BVM · Object 292
T-90  Т-90А · T-90M
Trophies/Lend-Lease 
Germany  ▂T-III · ▂T-V
Great Britain  ▂МК-IX "Valentine"
USA  ▂M3 Medium · ▂M4A2